Results 11 to 20 of about 205,721 (300)

Cobalt Detection Using Fluorescent Dye Layers

open access: yesEngineering Proceedings, 2022
In this paper, we report the preliminary results regarding the use of fluorescent dye calcein (C30H26N2O13) as a sensor for the detection of cobalt levels in aqueous solutions.
Fernando Arturo Armenta-Serna   +5 more
doaj   +1 more source

Quenching Efficiency of Quantum Dots Conjugated to Lipid Bilayers on Graphene Oxide Evaluated by Fluorescence Single Particle Tracking

open access: yesApplied Sciences, 2022
A single particle observation of quantum dots (QDs) was performed on lipid bilayers formed on graphene oxide (GO). The long-range fluorescence quenching of GO has been applied to biosensing for various biomolecules.
Yoshiaki Okamoto   +2 more
doaj   +1 more source

Fluorescence Detection Characteristic of Heavy-metal Chromium Ions in Water by Photoluminescent Tungsten-oxide Cluster Material

open access: yesShipin gongye ke-ji, 2022
In this work, using Eu3+ embedded tungsten-oxygen cluster (compound 1) as the fluorescent probe material, the rapid and sensitive fluorescence detection of heavy metal Cr3+ ions in aqueous solution by compound 1 has been systematically studied.
Zhenwei WANG   +3 more
doaj   +1 more source

Determination of epristeride by its quenching effect on the fluorescence of L-tryptophan

open access: yesJournal of Pharmaceutical Analysis, 2013
A rapid, novel spectrofluorimetric method to determine epristeride (EP) in biological fluids and a pharmaceutical formulation was developed, based on the fact that fluorescence intensity of l-tryptophan could be quenched by EP in the medium of pH=9.0 ...
Ai-Qin Gong, Xia-Shi Zhu
doaj   +1 more source

Promoting near‐infrared II fluorescence efficiency by blocking long‐range energy migration

open access: yesAggregate, 2023
Generally, long wavelength absorbed near‐infrared II (NIR‐II) dyes have a low fluorescence efficiency in aggregate states for aggregate‐caused quenching effect, simultaneously enhancing efficiency and extending absorption is a challenging issue for NIR ...
Changjin Ou   +9 more
doaj   +1 more source

Binding of caffeine with nicotinamide: A study by means of fluorescence quenching and UV-Vis spectroscopic techniques

open access: yesSt. Petersburg Polytechnical University Journal: Physics and Mathematics, 2023
In this work, the binding of caffeine (CAF) with nicotinamide (NIC) has been investigated by means of fluorescence quenching and UV-Vis spectroscopic techniques.
Gebreyohanes Ataklti Abraha   +1 more
doaj   +1 more source

Facile synthesis of chitosan-capped ZnS quantum dots as an eco-friendly fluorescence sensor for rapid determination of bisphenol A in water and plastic samples [PDF]

open access: yes, 2014
This paper describes a novel eco-friendly fluorescence sensor for determination of bisphenol A (BPA) based on chitosan-capped ZnS quantum dots (QDs). By using safe and inexpensive materials, nontoxic ZnS QDs were synthesized via an environment-friendly ...
Bie, Jiaxin   +7 more
core   +1 more source

A minimal mathematical model of nonphotochemical quenching of chlorophyll fluorescence [PDF]

open access: yes, 2010
Copyright © 2010 Elsevier Ireland Ltd.
Ebenhöh, Oliver   +4 more
core   +1 more source

Analysis of initial chlorophyll fluorescence induction kinetics in chloroplasts in terms of rate constants of donor side quenching release and electron trapping in photosystem II [PDF]

open access: yes, 2008
The fluorescence induction F(t) of dark-adapted chloroplasts has been studied in multi-turnover 1 s light flashes (MTFs). A theoretical expression for the initial fluorescence rise is derived from a set of rate equations that describes the sequence of ...
Vredenberg, W.J.
core   +2 more sources

INVESTIGAÇÃO DA SUPRESSÃO DE FLUORESCÊNCIA DE SORO ALBUMINA BOVINA E HUMANA POR COMPLEXO DE RUTÊNIO

open access: yesQuímica Nova, 2015
The binding of [RuCl2(L)] (L = N,N-bis(7-methyl-2-pyridylmethylene)-1,3-diiminopropane) to bovine and human serum albumin was investigated by the fluorescence quenching technique.
Mariete B. Moreira   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy